Improvement in paper-bag machines



2 she ew- -Sheet 1.

.I'. S. (ISTRANDER. Paper-Bag Machines. No. 143,925. Pa tented0ct.21,l873.

2Sheet's--Sheet2. J. S. USTBANDER. Paper-Bag Machines. No. 143,925.Patented 0m.21,1s7s.

UNITED STATES FATENT @FFICE.

JAMES S. OSTRANDER, OF DAYTON, OHIO.

IMPROVEMENT IN PAPER-BAG MACHINES.

Specification forming part of Letters Patent No. 143,925, dated October21, 1873; application filed July 3, 1873.

To all whom it may concern:

' Be it known that I, JAMEs S. OsrRANnnn,

of Dayton, Montgomery county, State of Ohio, have invented a eertainnewand useful Improvement in Paper-Bag Machines, of which the following isa specification:

My invention relates to machines for cutting 0E paper tubes diagonally,for the formation of bags therefrom; and consists of apeculiarlyconstructed and operating device for slightly opening the tubeof paper, after it has been fully formed and fed to the machine, in sucha way as to enable a revolving knife to sever the tube while partiallyopen, thus forming the usual lap for the pasting of the bottom seam ofthe bag. My invention is so designed that it can be applied to anymachine for tube forming, it being applicable only to devices forcutting off after the tubehasbcen completely formed and pasted, and byreason of its peculiar character it admits of ready change to suitdifi'erent widths of bags, and operates in such a way as to assistrather than retard the progress of the tube over it.

Figure 1 is a perspective view of that portlon of a bag-machine whichembodies my improvement. Fig. 2 is a perspective view of my header forpartially opening the formed tube as it is fed to the machine. 7 view inthe line of the tube, showing the feed rollers for carrying in theformed tube in the direction of my devices for opening and cutting off,and showing also the feed-rollers operating directly in connection withthe device for partially opening the tube. Fig. 4 is a crosssection ofmy header for partially opening the tube, showing also clearly theprovision for changing its width.

A is the frameof the machine, and B represents a revolving knife forcutting off paper tubes diagonally for which Letters Patent were grantedto Charles H. Morgan, February 17, 1863.

My machine is adapted to receive into the feed rollers O 0 paper tubesof anylength which have been previously formed and pasted and such atube is shown in the drawings as entering feed-rollers O O, which arearranged to deliver it properly to my opening and cutting off devices. DD are feed-rollers having a belt connection with rollers (l G, therollers Fig. 3 is a sectional" D D being provided to act in conjunctionwith rollers G O for feeding the tube, and also in conjunction with mypeculiar device for partially opening the tube. The latter may bedescribed as follows: E is a block of wood or metal, called by me aspreader or header, of such thickness as to accommodate a pair ofrollers, 61 d, within it, touching each other and projecting slightlyabove and below the surface of the header. Another pair of rollers, e 0,smaller in diameter, are also located within the header, and all theserollers turn on axles fitted in the straps or bearing-plates ff. Thesides of the header E are dovetailed, as shown, to receiveinterchangeable edges g, so as to increase or decrease the width of theheader to suit different widths of bags. In the machine the header E islocated between the rollers l) D in such a position, as shown, that therollers d d are upon the feed side, and the rollers e c are located onthe discharge side of the feedrollers D D, the rollers 01 0 having theirperipheries in contact with the upper feed-roller D, and the rollers d 0having their peripheries in contact with the roller D. The distancebetween the rollers d and c and d and e enables the feed-rollers D D toenter well between them and thus look, as it were, the header E inplace, while at the same time the paper tube, which is fed so as tosurround the header E, is in contact with moving rollers upon all sides,as shown, so that it has no disposition to drag in feeding. Thisprovision of rollers d 61 c c, in addition therefore to serving toretain the header in place, also so materially assists in relieving thetube from friction in feeding that a greater number of bags can be cutoff per minute than if fed over a stationary block, E, with no suchprovision of rollers. In order that the tube while being cut off may beproperly supported, feeding and tension rolls G G are provided, whoseperipheries are by proper gearing arranged to run (under all conditionsof bag-making, whether long or short) at a greater speed than theperipheries of the rollers D D, so that in the feeding of the tube bythese rollers D D G G the latter exert a vigorous tension upon the tube(resisted by the rollers D D) such as to enable the separation of thetube easily and effectually at the point of desired severance when theknife in its revolution strikes it. In order to prevent any depressionof the header E when the knife strikes, a supporting-rest, H, isattached to the frame below the passing tube. To enable the severed endof the tube to enter the rollers G G properly, the usual flaringguide-plates I I are provided, and the bottom seam of the bag, after thepassage of the tube through the rollers G G, may be seamed, pasted, anddelivered by the customary pasting-and-folding blade J an d rollers G K.To enable the machine to make different lengths of bags, the framing ofthe rollers G G K and knife B are adjustable to and from the revolvingknife, and the speed of either the feeding-rolls D D G G is changed, orthe speed of the revolving knife B, in order to make different lengthsof bags. To prevent any lateral play of the header during the operationof the machine, side rolling idlers M, whose frames are adjustable, areso located on the machine that they may run in contact with the sides ofthe tube of paper at the edge of the header, in the manner shown.

It is obvious that my improvement is adapted to be operated inconnection with any form of knife, or diagonal severing device, otherthan the one described. The shaft 1) of the knife may be connected tothe driving power of the machine in any preferred way; and so also maythe feed-rollers D D and GG K be connected to the driving power of themachine by any of the well-known forms of gearing, through the medium ofthe gear-wheels N L O, or otherwise.

The bearings of upper roller D are, as shown, adjustable from front torear of the machineframe, so that the axis of the upper roller may beadjusted relatively to the axis of the lower roller, so as to beparallel thereto or otherwise, for the purpose of compensating for anyirregularities in. the sizes and location of the rollers 11 d e e, andadjusting the paper to run in the proper direct line toward the knife.

I claim- 1. In combination with feed-rollers D D and knife B, the headerE, fitted with rollers d d e e, and connected and operatingsubstantially in the manner and for the purpose specified.

2. The header E, having interchangeable sides or edges 9,substantiallyas and for the purpose specified.

3. The combination of the knife B, header E, fitted with rollers d d ee, and feed-rollers D D, the roller D turning in horizontally-adjustablebearings,substantially as and for the purpose specified.

. In testimony of which invention I hereunto set my hand.

JAMES S. OSTRANDER. Witnesses:

FRANK MILLWARD, J os. K. LINN.

